IOS正则表达式判断输入类型(整理)
在开发过程中，有时需要对用户输入的类型做判断，最常见是在注册页面即用户名和密码，代码整理如下：
只能为中文
-(BOOL)onlyInputChineseCharacters:(NSString*)string{
NSString*zhString=@"[\u4e00-\u9fa5]+";
NSPredicate*predicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",zhString];
BOOLinputString=[predicateevaluateWithObject:string];
returninputString;
}
只能为数字
-(BOOL)onlyInputTheNumber:(NSString*)string{
NSString*numString=@"[0-9]*";
NSPredicate*predicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",numString];
BOOLinputString=[predicateevaluateWithObject:string];
returninputString;
}
只能为小写
-(BOOL)onlyInputLowercaseLetter:(NSString*)string{
NSString*regex=@"[a-z]*";
NSPredicate*predicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",regex];
BOOLinputString=[predicateevaluateWithObject:string];
returninputString;
}
*只能为大写
-(BOOL)onlyInputACapital:(NSString*)string{
NSString*regex=@"[A-Z]*";
NSPredicate*predicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",regex];
BOOLinputString=[predicateevaluateWithObject:string];
returninputString;
}
允许大小写
-(BOOL)InputCapitalAndLowercaseLetter:(NSString*)string{
NSString*regex=@"[a-zA-Z]*";
NSPredicate*predicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",regex];
BOOLinputString=[predicateevaluateWithObject:string];
returninputString;
}
允许含大小写或数字(不限字数)
-(BOOL)inputLettersOrNumbers:(NSString*)string{
NSString*regex=@"[a-zA-Z0-9]*";
NSPredicate*predicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",regex];
BOOLinputString=[predicateevaluateWithObject:string];
returninputString;
}
允许含大小写或数字(限字数)
-(BOOL)inputNumberOrLetters:(NSString*)name{
NSString*userNameRegex=@"^[A-Za-z0-9]{6,20}+$";
NSPredicate*userNamePredicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",userNameRegex];
BOOLinputString=[userNamePredicateevaluateWithObject:name];
returninputString;
}
允许汉字或数字(不限字数)
-(BOOL)inputChineseOrNumbers:(NSString*)string{
NSString*regex=@"[\u4e00-\u9fa5]+[0-9]*";
NSPredicate*predicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",regex];
BOOLinputString=[predicateevaluateWithObject:string];
returninputString;
}
允许汉字或数字(限字数)
-(BOOL)inputChineseOrNumbersLimit:(NSString*)string{
NSString*regex=@"[\u4e00-\u9fa5][0-9]{6,20}+$";
NSPredicate*predicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",regex];
BOOLinputString=[predicateevaluateWithObject:string];
returninputString;
}
允许汉字，大小写或数字(不限字数)
-(BOOL)inputChineseOrLettersAndNumbersNum:(NSString*)string{
NSString*regex=@"[\u4e00-\u9fa5]+[A-Za-z0-9]*";
NSPredicate*predicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",regex];
BOOLinputString=[predicateevaluateWithObject:string];
returninputString;
}
允许汉字，大小写或数字(限字数)
-(BOOL)inputChineseOrLettersNumberslimit:(NSString*)string{
NSString*regex=@"[\u4e00-\u9fa5]+[A-Za-z0-9]{6,20}+$";
NSPredicate*predicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",regex];
BOOLinputString=[predicateevaluateWithObject:string];
returninputString;
}
以上所述是小编给大家介绍的IOS正则表达式判断输入类型(整理)，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对毛票票网站的支持！